Invention Application
- Patent Title: FINGERPRINT SENSING APPARATUS, FINGERPRINT READOUT CIRCUIT, AND TOUCH DISPLAY PANEL
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Application No.: US17530381Application Date: 2021-11-18
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Publication No.: US20220165083A1Publication Date: 2022-05-26
- Inventor: Po-Chi Lin , Chiu-Huang Huang , Jung-Chung Lee
- Applicant: Novatek Microelectronics Corp.
- Applicant Address: TW Hsinchu
- Assignee: Novatek Microelectronics Corp.
- Current Assignee: Novatek Microelectronics Corp.
- Current Assignee Address: TW Hsinchu
- Main IPC: G06V40/13
- IPC: G06V40/13 ; G06F3/041

Abstract:
A fingerprint sensing apparatus includes a plurality of fingerprint sensors and a fingerprint readout circuit. The fingerprint sensors may be configured to operate in a fingerprint sensing cycle. The fingerprint readout circuit may be coupled to the plurality of fingerprint sensors via a plurality of sensing lines. The fingerprint readout circuit may be configured to control the fingerprint sensors to operate in the fingerprint sensing cycle. The fingerprint sensing cycle includes an initialization period, an exposure period and a readout period. A voltage of a reset node in each fingerprint sensor among the fingerprint sensors is reset to a first voltage in a reset period before the fingerprint sensing cycle starts. The voltage of the reset node in each fingerprint sensor is initialized to an initial voltage in the initialization period. The initial voltage is different from the first voltage.
Public/Granted literature
- US11715322B2 Fingerprint sensing apparatus, fingerprint readout circuit, and touch display panel Public/Granted day:2023-08-01
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